Identify device idProduct and idVendor by key in command below in Terminal. Make sure the device has been plugged into the usb.
sudo lsusb -v
it can be located as hi lighted in image below

Then at Terminal and type below command
gksu gedit /etc/udev/rules.d/15-zte-mf180.rules (as shown in image below)

it will open up gedit Text Editor as shown below.

then key in as below:
SUBSYSTEM=="usb" SYSFS{idProduct}=="0117" SYSFS{idVendor}=="19d2" RUN+=/lib/udev/modem-modeswitch --vendor 0x19d2 --product 0x0117 --type option-zerocd"
then press save button and close it.
Next
Click System -> Preferences -> Network Connections
Click at Mobile Broadband tab
Click Add button
then follow steps as shown in image below:





Lastly unplugged and replug the mobile broadband, wait for a while and click at the network icon at panel bar.

